All of these alternatives are carbon-based fuels（）molecules are smaller and simpler than those of gasoline.

The students in a certain physical education class are on either the basketball team or the tennis team, are on both these teams, or are not on either team. If 15 students are on the basketball team, 18 students are on the tennis team, 11 students are on both teams, and 14 students are not on either of these teams, how many students are in the class?

The students in a certain physical education class are on either the football team or the basketball team, are on both these teams, or are not on either team. If 12 students are on the football team, 15 students are on the basketball team, 8 students are on both teams, and 9 students are not on either of these teams, how many students are in the class?

These are the principles, however formulated,（）all good men and women throughout the world are standing.

These are the principles, however formulated, for which all good men and women throughout the world,（）of race or creed, education, social position, or occupation, are standing.

读网络教育学院非英语专业和非艺术类专业专升本的学生报考统考，除计算机应用基础外，还需报考（）

All these dishes taste _____. Don’t you think so?

All these dishes taste ______. Don’t you think so?

I’m afraid there is not much (differ) ____ in their points of view.

Line segment AB is a diameter of circle O. If the coordinates of O are(2, -1)and the coordinates of point A are (-1, -2), what are the coordinates of point B?

Which are syntactically valid statement at// point x？（）     class Person {     private int a；  public int change（int m）{  return m；  }     }  public class Teacher extends Person {     public int b；  public static void main（String arg[]）{     Person p = new Person（）；     Teacher t = new Teacher（）；    int i；  // point x     }    }